It happens to me at least 4 times each round. Either I or someone else offers a pnap, but the opponent wants another type of nap. Withdrawl of the nap offered is however not possible for a few days. The workaround for this problem is to opp the other player with 1 wizard or agent. The opp fails with minimum losses, the NAP proposal gets lifted and you can now put in place the correct nap, that you both agreed upon.

Since you can lift the withdrawl block, it is useless. As such I propose to remove it all together or limit the withdrawl time to 2 ticks.